IN predicates on non-primary-key columns (%s) is not yet supported - then will it be ?

[Сергей Нагайцев]

CREATE COLUMNFAMILY post (
    KEY uuid,
    author uuid,
    blog uuid,
    name text,
    data text,
    PRIMARY KEY ( KEY )
);

SELECT * FROM post WHERE blog IN (1,2) AND author=3 ALLOW FILTERING;
(don't look at fact numbers are not uuids :)

Error: IN predicates on non-primary-key columns (blog) is not yet supported

And how to workaround this ?
Manual index tables ? Any guidelines how to design them ?